Auxiliary valve for detecting on-line ventilation valve

Abstract

The utility model relates to the technical field of detection auxiliary valves, and discloses an auxiliary valve for detection of an online ventilation valve, which comprises a valve body connected between a valve and a storage tank, a valve seat connected to the center of the valve body, a detection bin formed at the upper part of the valve seat, and a drain outlet arranged at the bottom end of the valve body; the valve cover is detachably connected to one side of the valve body; the sealing pressing plate is connected to the upper portion of the valve seat in a pressed mode, and a sealing material layer is arranged on the lower surface of the sealing pressing plate. The device is installed between the valve and the storage tank, the valve does not need to be detached from the storage tank during detection, and the problems that the maintenance period is long, the cost is high, and the valve falls off during hoisting are solved; a single-side cut-off scheme is adopted, so that the overall height of the valve body is relatively low; a drain outlet is formed in the bottom end of the valve body, so that the influence of accumulated liquid on the subsequent detection process is avoided; the sealing material layer is arranged on the lower surface of the sealing pressing plate, the sealing mode is simple, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary valve detection, in particular to an auxiliary valve for detecting an online ventilation valve. Background Art

[0002] The ventilation valve is a safety device to protect the storage tank. During use, its performance needs to be tested regularly. The detection methods are divided into online detection and offline detection. During online detection, it is necessary to cut off the connection between the storage tank and the valve. The detection devices of valve manufacturers and professional inspection agencies are bulky and costly to transport to the inspection site. In addition, it is difficult to connect and test the valve with the detection device without removing it from the storage tank. During offline testing, the valve needs to be removed from the storage tank and lifted from the top of the tank to the ground for testing by a crane, or sent to the manufacturer and professional agency for testing. Therefore, the existing detection methods have the problems of long detection cycle, high cost, threat to personal safety posed by flammable, explosive and harmful gases, and risk of valve falling during the lifting process.

[0003] The existing Chinese patent application number CN202320796142.8 discloses an online breathing valve auxiliary valve, which is formed into a "<" shape by two sets of connecting groove plates. The plate body can be easily squeezed into the interior of the valve body to achieve online detection and maintenance. One end of the online detection plate body is in a pointed cone shape, and a sealing rubber ring with a diameter matching the size of the sealing surface is fixedly connected to the lower surface of the plate body. The inside of the sealing rubber ring is hollow and filled with sponge pads and a number of springs. When the plate body is sent into the interior of the valve body, the sealing rubber ring structure is fixed at the notch position of the valve body by squeezing, which plays a certain sealing role. Its cutting principle is similar to that of the gate valve. However, this auxiliary valve structure (1) achieves the sealing effect by squeezing the sealing rubber ring, and its sealing rubber ring structure is complex. (2) There is no sewage outlet on the valve body, and the accumulated liquid affects the subsequent online detection. (3) The overall height of the valve body is relatively high.

[0004] Therefore, it is necessary to propose an auxiliary valve for detecting an online ventilation valve to at least partially solve the problems existing in the prior art. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] In order to solve the above problems, the utility model discloses an auxiliary valve for detecting an online ventilation valve; the auxiliary valve comprises:

[0007] The valve body is connected between the valve and the storage tank. The center of the valve body is connected to a valve seat. The upper part of the valve seat forms a detection chamber. The bottom of the valve body is provided with a sewage outlet.

[0008] A valve cover, which is detachably connected to one side of the valve body;

[0009] A sealing pressure plate is pressed onto the valve seat, and a sealing material layer is arranged on the lower surface of the sealing pressure plate.

[0010] Preferably, the upper and lower ends of the valve body are respectively connected to a valve connecting flange and a storage tank connecting flange, and the sewage outlet is arranged on the storage tank connecting flange.

[0011] Preferably, a first interface is provided on the valve connecting flange, and a second interface is provided on the storage tank connecting flange, and the first interface and the second interface are equipment interfaces.

[0012] Preferably, the first interface and the second interface are arranged on the same side of the valve body.

[0013] Preferably, the outer wall of the valve cover is connected with a handle 1.

[0014] Preferably, a gasket is connected between the valve cover and the side of the valve body, and a fastener connects the valve cover and the gasket to the valve body.

[0015] Preferably, a second handle is connected to one side of the sealing pressure plate close to the valve cover.

[0016] Preferably, the sealing pressure plate is clamped with the limit assembly on the valve body and the valve cover, and the limit assembly includes: limit member 1, limit member 2, limit member 3 and limit member 4; limit member 1 is connected to the connection between the valve body and the valve connecting flange, and limit member 1 is located on the side of the valve body away from the valve cover; limit member 3, limit member 2 and limit member 4 are connected to the inner wall of the valve cover, and limit member 2 and limit member 4 are arranged on both sides of limit member 3; the top of the sealing pressure plate abuts against limit member 1, the side of handle 2 close to the valve cover abuts against the inner wall of the valve cover, the upper surface of handle 2 abuts against limit member 3, and the two sides of handle 2 respectively abut against limit member 2 and limit member 4.

[0017] Preferably, the limiting member three is arranged at the center of the valve cover, and the limiting member two and the limiting member four are symmetrically distributed on both sides of the limiting member three.

[0018] Preferably, a bottom surface of the limiting member is configured as an inclined surface.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The utility model provides an auxiliary valve for detecting an online ventilation valve, which is installed between the valve and the storage tank. During detection, there is no need to remove the valve from the storage tank, which truly achieves online detection, saves time, labor and money, and solves the problems of long maintenance cycle, high cost and valve hoisting drop;

[0021] The single-side cut-off scheme is adopted, and the overall height of the valve body is relatively low, which reduces the cost and facilitates subsequent maintenance;

[0022] A drain port is set at the bottom of the valve body to facilitate the discharge of accumulated liquid during operation and avoid the influence of accumulated liquid on the subsequent detection process;

[0023] The sealing pressure plate is pressed against the valve seat sealing opening by the cooperation of the limiter to achieve cutting. A sealing material layer is arranged on the lower surface of the sealing pressure plate. The position of the sealing pressure plate is limited and will not be offset. The sealing method is simple and the sealing effect is good.

[0024] The utility model is an auxiliary valve for detecting an online ventilation valve. Other advantages, objectives and features of the utility model will be partially reflected through the following description, and will also be partially understood by technicians in this field through research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a top view of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure along the cutting direction when the valve of the utility model is working normally;

[0028] Figure 3 This is a schematic diagram of the inner structure of the valve cover in the utility model;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure along the cutting direction during online detection of the valve of the utility model.

[0030] In the figure: 1. Valve connecting flange; 4. Storage tank connecting flange; 7. Limiting piece 1; 8. Inspection chamber; 9. Valve seat; 12. Gasket; 13. Valve cover; 14. Fastener; 15. Handle 1; 16. Limiting piece 2; 17. Limiting piece 3; 18. Limiting piece 4; 19. Sealing pressure plate; 20. Sealing material layer; 21. Handle 2. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model will be further described below in conjunction with the accompanying drawings.

[0033] like Figure 1 to Figure 4 As shown, in one embodiment, an auxiliary valve for detecting an online ventilation valve provided in this embodiment includes:

[0034] The valve body is connected between the valve and the storage tank. The center of the valve body is connected to a valve seat 9. The upper part of the valve seat 9 forms a detection chamber 8. The bottom of the valve body is provided with a sewage outlet;

[0035] A valve cover 13, which is detachably connected to one side of the valve body;

[0036] The sealing pressure plate 19 is pressed onto the valve seat 9 , and a sealing material layer 20 is provided on the lower surface of the sealing pressure plate 19 .

[0037] The working principle and beneficial effects of the above technical solution are:

[0038] The present embodiment provides an auxiliary valve for detecting an online ventilation valve. When the valve is working normally, the sealing pressure plate 19 is removed from the valve body, and the valve cover 13 is sealed and installed on one side of the valve body; when the valve is being detected, the accumulated liquid in the valve body is discharged through the drain port; then the valve cover 13 is removed, the sealing pressure plate 19 is placed above the valve seat 9, and the valve cover 13 is installed so that the two sides of the sealing pressure plate 19 are respectively clamped to the valve body and the valve cover 13 without displacement; the sealing material layer 20 under the sealing pressure plate 19 seals the gap between the sealing pressure plate 19 and the valve seat 9; and then the connection between the valve and the storage tank is cut off for online detection.

[0039] In one embodiment, the upper and lower ends of the valve body are respectively connected to the valve connecting flange 1 and the tank connecting flange 4, the drain outlet is arranged on the tank connecting flange 4, and the drain outlet can be continuously connected to the third screw plug.

[0040] The valve body is connected to the valve and the tank through the upper and lower flange structures, which is convenient for assembly and disassembly. The sewage outlet is blocked by the third screw plug, which is convenient for disassembly to discharge the accumulated liquid.

[0041] Among them, the valve connection flange 1 is provided with a first interface, and the first interface is detachably connected to a first screw plug; the storage tank connection flange 4 is provided with a second interface, and the second interface is detachably connected to a second screw plug.

[0042] The first interface and the second interface are equipment interfaces. A detection equipment interface is provided on the auxiliary valve to facilitate the connection of the detection equipment, so that online detection can be completed without removing the valve from the storage tank.

[0043] The first interface and the second interface are arranged on the same side of the valve body, so as to facilitate the quick connection of the detection equipment during detection.

[0044] The outer wall of the valve cover 13 is connected with a handle 15 to facilitate the loading and unloading of the valve cover 13.

[0045] A gasket 12 is connected between the valve cover 13 and the side of the valve body, and a fastener 14 connects the valve cover 13 and the gasket 12 to the valve body.

[0046] A second handle 21 is connected to one side of the sealing pressure plate 19 close to the valve cover 13 to facilitate loading and unloading of the sealing pressure plate 19 .

[0047] Among them, Figure 2-Figure 4 As shown, the sealing pressure plate 19 is clamped with the limiting components on the valve body and the valve cover 13, and the limiting components include: limiting member 1 7, limiting member 2 16, limiting member 3 17 and limiting member 4 18; limiting member 1 7 is connected to the connection between the valve body and the valve connecting flange 1, and limiting member 1 7 is located on the side of the valve body away from the valve cover 13; limiting member 3 17, limiting member 2 16 and limiting member 4 18 are connected to the inner wall of the valve cover 13, and limiting member 2 16 and limiting member 4 18 are arranged on both sides of limiting member 3 17; the top of the sealing pressure plate 19 abuts against limiting member 1 7, the side of the lifting handle 2 21 close to the valve cover 13 abuts against the inner wall of the valve cover 13, the upper surface of the lifting handle 2 21 abuts against limiting member 3 17, and the two sides of the lifting handle 21 abut against limiting member 2 16 and limiting member 4 18 respectively.

[0048] The limiting member 3 17 is arranged at the center of the valve cover 13 , and the limiting member 2 16 and the limiting member 4 18 are symmetrically distributed on both sides of the limiting member 3 17 .

[0049] The bottom surface of the limiting member 7 is arranged as an inclined surface.

[0050] The working principle of the utility model is:

[0051] The present embodiment provides an auxiliary valve for detecting an online ventilation valve, in which the valve body is installed between the valve and the storage tank through the valve connecting flange 1 and the storage tank connecting flange 4; a first interface is provided on the valve connecting flange 1, and a second interface is provided on the storage tank connecting flange 4. During normal operation, the first interface and the second interface are blocked with a first screw plug and a second screw plug respectively. During detection, the first screw plug 3 and the second screw plug 6 are removed. The first interface and the second interface are arranged on the same side, which is convenient for quick connection of the detection equipment during detection; a handle 15 is provided on the outside of the valve cover 13 to facilitate the loading and unloading of the valve cover 13; a limiter 2 16, a limiter 3 17 and a limiter 4 18 are provided on the inner surface of the valve cover 13, and the limiter 2 16 and the limiter 4 18 are symmetrically distributed on the left and right sides of the center of the limiter 3 17; a sewage outlet is provided at the bottom of the storage tank connecting flange 4. During normal operation, the gasket 12 and the valve cover 13 are connected to the valve body through the fastener 14, and the sewage outlet is blocked with the third screw plug.

[0052] When testing the valve, unscrew the third screw plug to discharge the accumulated liquid. When the accumulated liquid is drained, unscrew the first screw plug and the second screw plug, and connect the testing equipment to the first interface and the second interface; remove the fastener 14, remove the valve cover 13, and place the sealing pressure plate 19 on the valve seat 9 through the handle 21, and push it into the testing chamber 8. The sealing pressure plate 19 is against the inclined surface of the limit member 1 7. Under the cooperation of the limit member 1 7, the limit member 2 16, the limit member 3 17, and the limit member 4 18, the position of the sealing pressure plate 19 is limited; when the valve cover 1 3 and gasket 12 are installed on the valve body. When the fastener 14 is tightened, the sealing pressure plate 19 is tightly pressed on the sealing port of the valve seat 9; the connection between the valve and the storage tank is cut off, and then the test is carried out. After the test, if there is a problem, the valve can be repaired directly online. During the repair, there is no risk of foreign matter falling into the storage tank; after the repair, the sealing pressure plate 19 is taken out by hand by pulling the handle 21, and the valve cover 13 and the gasket 12 are assembled with the valve body by the fastener 14, and the first screw plug, the second screw plug and the third screw plug are screwed on to resume production operation.

[0053] The beneficial effects of the utility model are:

[0054] The auxiliary valve for detecting an online ventilation valve provided in this embodiment is installed between the valve and the storage tank. During detection, there is no need to remove the valve from the storage tank, thus truly achieving online detection, saving time, effort and money, and solving the problems of long maintenance cycle, high cost and valve hoisting drop;

[0055] The single-side cut-off scheme is adopted, and the overall height of the valve body is relatively low, which reduces the cost and facilitates subsequent maintenance;

[0056] A drain port is set at the bottom of the valve body to facilitate the discharge of accumulated liquid during operation and avoid the influence of accumulated liquid on the subsequent detection process;

[0057] The sealing plate 19 is pressed against the sealing opening of the valve seat 9 by the cooperation of the limiter to achieve cutting. A sealing material layer 20 is arranged on the lower surface of the sealing plate 19. The position of the sealing plate 19 is limited and will not be offset. The sealing method is simple and the sealing effect is good.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An auxiliary valve for detecting an online ventilation valve, characterized in that: include: A valve body, the valve body is connected between the valve and the storage tank, the center of the valve body is connected to a valve seat (9), the upper part of the valve seat (9) forms a detection chamber (8), and the bottom end of the valve body is provided with a sewage outlet; A valve cover (13), the valve cover (13) is detachably connected to one side of the valve body; A sealing pressure plate (19) is pressed onto the valve seat (9), and a sealing material layer (20) is provided on the lower surface of the sealing pressure plate (19).

2. The auxiliary valve for detecting an online ventilation valve according to claim 1, characterized in that: The upper and lower ends of the valve body are respectively connected to a valve connecting flange (1) and a storage tank connecting flange (4), and the sewage outlet is arranged on the storage tank connecting flange (4).

3. The auxiliary valve for detecting an online ventilation valve according to claim 2, characterized in that: A first interface is provided on the valve connection flange (1), and a second interface is provided on the storage tank connection flange (4). The first interface and the second interface are equipment interfaces.

4. The auxiliary valve for detecting an online ventilation valve according to claim 3, characterized in that: The first interface and the second interface are arranged on the same side of the valve body.

5. The auxiliary valve for detecting an online ventilation valve according to claim 1, characterized in that: The outer wall of the valve cover (13) is connected with a handle 1 (15).

6. The auxiliary valve for detecting an online ventilation valve according to claim 1, characterized in that: A gasket (12) is connected between the valve cover (13) and the side of the valve body, and a fastener (14) connects the valve cover (13) and the gasket (12) to the valve body.

7. The auxiliary valve for detecting an online ventilation valve according to claim 2, characterized in that: A second handle (21) is connected to one side of the sealing pressure plate (19) close to the valve cover (13).

8. The auxiliary valve for detecting an online ventilation valve according to claim 7, characterized in that: The sealing pressure plate (19) is clamped with the limiting assembly on the valve body and the valve cover (13), and the limiting assembly includes: limiting member 1 (7), limiting member 2 (16), limiting member 3 (17) and limiting member 4 (18); limiting member 1 (7) is connected to the connection between the valve body and the valve connecting flange (1), and limiting member 1 (7) is located on the side of the valve body away from the valve cover (13); limiting member 3 (17), limiting member 2 (16) and limiting member 4 (18) are connected The valve cover (13) is connected to the inner wall of the valve cover (13), and the second limit member (16) and the fourth limit member (18) are arranged on both sides of the third limit member (17); the top of the sealing pressure plate (19) abuts against the first limit member (7), the side of the second handle (21) close to the valve cover (13) abuts against the inner wall of the valve cover (13), the upper surface of the second handle (21) abuts against the third limit member (17), and the two sides of the second handle (21) respectively abut against the second limit member (16) and the fourth limit member (18).

9. The auxiliary valve for detecting an online ventilation valve according to claim 7, characterized in that: The limiting member 3 (17) is arranged at the center of the valve cover (13), and the limiting member 2 (16) and the limiting member 4 (18) are symmetrically distributed on both sides of the limiting member 3 (17).

10. The auxiliary valve for detecting an online ventilation valve according to claim 7, characterized in that: The bottom surface of the limiting member 1 (7) is configured as an inclined surface.

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